The BIOSRenamer.exe tool included with ASUS BIOSes is only to be run if you need to use USB Flashback feature (USB Flashback expects a certain filename).
I just flashed the BIOS today on my ASUS board by simply unzipping and copying the file to the USB stick, then selecting the ROG-CROSSHAIR-VIII-HERO-ASUS-4402.CAP in EZ Update from the BIOS menu. All went well as usual.
Perhaps with the B650 board EZ Update doesn't like reading a BIOS file with the USB Flashback name?
I just flashed the BIOS today on my ASUS board by simply unzipping and copying the file to the USB stick, then selecting the ROG-CROSSHAIR-VIII-HERO-ASUS-4402.CAP in EZ Update from the BIOS menu. All went well as usual.
Perhaps with the B650 board EZ Update doesn't like reading a BIOS file with the USB Flashback name?